ULTRA
P.I.R. INSULATION BOARD is composed of
rigid, freon free, closed-cell Polyisocyanurate
foam material conforming
to ASTM F84 (Flame Spread rating of 75 or less),
UL Class 1 on incombustible characteristics and ASTM
C165 (Ave. Compressive Strength of 31 psi.) with
aluminum foil vapor barrier on both faces.